Andrey Igorevich Melnichenko's 'Sailing Yacht A,' which Mr Melnichenko is thought to have named 'A' to ensure it is listed first in shipping registers, is taking its first sea trials in Kiel, northern Germany.
The behemoth is the world's largest sailing superyacht as the Russian industrialist takes his quest to ruling the seas one step further.
The vessel is an upgrade to the Russian billionaire's current multi-million pound 'Motor Yacht A,' that set him back 263€million.
At 468ft in length, with ship masts nearing 300ft high, the 'mega-yacht,' has eight floors and includes an underwater observation room.
The boat is powered by a 'hybrid diesel-electric package with controllable pitch propellers,' and is designed to accommodate 20 guests and a crew of 54.
The yacht was designed by Frenchman Philippe Starck and built by German Naval Yards, Nobiskrug.
Posted By PSmooth